High-Performance CHIRP Transducer for Enhanced Marine Navigation

The Echonautics BT87M1KW is a powerful 1kW medium CHIRP transducer designed for exceptional shallow-water performance and superior bottom detail. Engineered for high-speed applications, its low-profile thru-hull design minimizes drag, making it ideal for serious anglers and professional marine operators. The transducer’s narrow beam width ensures precise detection of fish and underwater structures, delivering clear and accurate sonar returns.

Advanced CHIRP Technology for Unmatched Clarity

Operating within an 85-135kHz frequency range, this CHIRP transducer provides enhanced target separation and depth penetration. The medium CHIRP capability enables improved resolution, making it easier to identify fish near reefs, wrecks, and other complex underwater environments.

Robust and Durable Construction

Built with a sturdy bronze housing, the Echonautics BT87M1KW is designed to withstand harsh marine conditions. The acoustic window is made of urethane, ensuring reliable signal transmission while maintaining durability against prolonged water exposure.

Optimized for Various Hull Configurations

The 0° tilted element version is optimized for boats with a hull dead rise between 0° and 7°, allowing for efficient installation and accurate sonar readings.

Technical Specifications

• Function: Depth and temperature measurement
• Frequency: CHIRP 85–135 kHz
• Tilt/Dead rise: 0° tilted version, suitable for hulls with 0° to 7° dead rise
• Material: Bronze housing
• RMS Power: 1 kW
• Hole Diameter: 87.6 mm (3.45")
• Cable Length: 9 m (30 ft)
• Temperature Sensor: NTC
• Acoustic Window: Urethane

Product Dimensions

• Hole Diameter: 87.6 mm (3.45")
• Cable Length: 9 m (30 ft)

Available Variations

• BT87M1KW-00: 0° Tilt
• BT87M1KW-12: 12° Tilt
• BT87M1KW-18: 18° Tilt

Key Highlights

• High-performance 1kW CHIRP transducer for superior sonar clarity
• Narrow beam width for precise fish targeting near structures
• Low-profile thru-hull design minimizes drag and enhances speed performance
• Sturdy bronze construction for durability in marine environments
• Available in multiple tilt angles for optimal hull compatibility

Designed for serious anglers and marine professionals, the Echonautics BT87M1KW delivers precision, durability, and exceptional underwater imaging, making it an excellent choice for advanced marine navigation and fishing applications.